Arles said:Though it must be really painful for Guts not only to remember that, but to recall the Eclipse as well... The way he grabs his face after thinking about all that shows it perfectly.
Yup, and it's also a take back to the similar scene in the cave from volume 17. In fact many things in this episode seem to serve among other things the purpose of reminding and summarizing to the reader several plot lines that will be coming together (and perhaps be resolved) in Elfhelm.